Tritium Release Limit for Fluoride Salt-cooled High-temperature Reactors

Tritium generation is potentially a significant issue in Fluoride salt-cooled High-temperature Reactors (FHRs). Tritium in its molecular form, T₂, is highly permeable through reactor structure materials, especially under high temperatures. Since tritium presents a potential health hazard, its release must be controlled and mitigated. However, tritium release limit for FHRs is not specified in the current radiation protection regulations since FHRs are still being developed. This study first reviews related radiation protection regulations and literature before proposing a potential limit value of the tritium release rate for FHRs. (authors)